japan



UNITED STATES PATENT OFFIC YOSHITARO YAMAMOTO, OF KOEBE, JAPAN, ASSIGNOR0F ONE-FOURTH TO Ii MIZUSAWA, 0F HYOGO KEN, JAPAN, AND ONE-FOURTH TOTATSUZO KAN KOBE, JAPAN.

PROCESS OF DEODORIZING AND DECOLORING BEAN-FLOUR.

No Drawing.

Tow/l whom it may concern: Be it known that I,YosH1TARo YAMAMOTO,subject of the Emperor of Japan, residing at No. 5 Zitchome, Taikaidori,Hyogo, city of Kobe, Japan, have invented new and useful Improvements inProcesses of Deodorizing and Decoloring Bean-Flour, of which thefollowing is a specification.

This invention relates to a process of preparing dcodorized anddecolorized bean flour from raw bean, or deoiled bean and consists insteeping in a weak solution of an organic acid bean coarsely broken anddeprived of its bran, until it has swelled and lost all-its offensivesmell, and color; then removing all the traces of the acid by carefullywashing thematerial with water, and then drying and grinding it. 7. Theobject of this invention is to obtain bean flour suitable for use asmaterial for making sweetmeats, as a substitute of powdered milk, or forpreparing bath powder, and the bean flour prepared according to myinvention is most suited for such purpose, as it has no oflensive smellinherent to raw bean, is white in color, and its albuminous constituentsretain its digestive quality. Let me now describe how my invention iscarried out. Take raw bean or bean deoiled without subjecting it to anyhigh temperature, break it and remove bran therefrom. Then steep it in asolution of table vinegar dissolved in a proportion of from 1 t0 2liters of vinegar to 100 liters of water, warm the liquid with a heatnot higher than 60 C., (or the liquid may not be warmed. if the bean isallowed to remain in it sufliciently long), and as bicarbonate of sodain 100 liters of water,

and the bean is again washed with water, and dried with alowtemperature. It is then ground and sieved, and the bean flour isobtained. In carrying out this invention, instead of table vinegar, from0.0045 to 0.0085% of Specification of Letters Patent.

name to this specification.

Patented Aug. 2

Application filed May 21, 1919. Serial No. 298,792.

acetic acid or any other harmless acid may be used, which is fillOWtupon the bean without warming i a er steeping the bean in a solutioi ifit is thoroughly washed with in process of neutralizing acid with a ofbicarbonate of soda may be t with.

Bean flour as hitherto made, h

defects, such as the offensive smell thereto, its light yellowish color,8 is heated, art of the offensive smel removed, at then the albuminbecomes condensed and consequentl tive. Now, according to in ii can istreated with a weak so uti organic acid and without causing c tion inthe albumin, matters which the offensive smell and color of thedecomposed and removed, such ma ing changed into soluble substance theproduct obtained by myprocess pure white in color, and retains minouscomponents unaltered, that condition they exist in raw bean. bean flourproduced by my proces used in place of wheat flour or rice makingsweetmeats, as a substitute dered milk for drinking purpose food stufffor other purposes. I1 also used as material for prepar: powder and alsoas body of soap.

I claim The process of deodorizing and izing bean flour, which comprisesthe been into a coarse powder and 1 the bran therefrom, steeping this ina solution of one to two liters oi to 100 liters of water, heating theto a temperature not exceeding moving the powder from said solu washingit withwater, then stee powder in a solution of 140-200 g bicarbonate ofsoda to liters removing the powder and again w; in water, and dryingsaid powder temperature.

In testimony whereof I have s1;

YOSHITARO YAMAlv

